Has anyone used Windchill to manage MFG files like MasterCAM files?

I've been asked to see if Windchill was used to support this anyplace else. Machine shop want so import in an manage MasterCAM files, revision controlled. I know that we can do this easily with a WTDocument and possibly a Soft-type. There should be some relationship between the MasterCAM file and the Part or CAD file is it generated from. I do not believe that adding as attachment to the EPMDocument will work. For one, these will be generated on a different timeline than the released CAD models. I can see as an alternate type of EPMDocument however the interfacing to these would be a PITA. What have others done here?